Sword Excalibar

(The). At the death of Uter Pendragon there were many
claimants to the crown; they were all ordered to assemble in “the great
church of London,” on Christmas Eve, and found a sword stuck in a stone
and anvil with this inscription: “He who can draw forth this sword, the
same is to be king.” The knights tried to pull it out, but were unable.
One day, when a tournament was held, young Arthur wanted a sword and
took this one, not knowing it was a charmed instrument, whereupon he
was universally acknowledged to be the God-elected king. This was the
sword of Excalibar. (History of Prince Arthur, i. 3.)

The enchanted sword

(in Amadis of Gaul). Whoever drew this sword from a rock was
to gain access to a subterranean treasure. (Cap. cxxx. See also caps. lxxii. and xcix.)